package net.sourceforge.fenixedu.applicationTier.Servico.department;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.FenixServiceException;
import net.sourceforge.fenixedu.dataTransferObject.department.DegreeCourseStatisticsDTO;
import net.sourceforge.fenixedu.domain.CompetenceCourse;
import net.sourceforge.fenixedu.domain.CurricularCourse;
import net.sourceforge.fenixedu.domain.Degree;
import net.sourceforge.fenixedu.domain.Enrolment;
import net.sourceforge.fenixedu.domain.ExecutionSemester;

public class ComputeDegreeCourseStatistics extends ComputeCourseStatistics {

    public List<DegreeCourseStatisticsDTO> run(Integer competenceCourseId, Integer executionPeriodId)
	    throws FenixServiceException {
	CompetenceCourse competenceCourse = rootDomainObject.readCompetenceCourseByOID(competenceCourseId);
	ExecutionSemester executionSemester = rootDomainObject.readExecutionSemesterByOID(executionPeriodId);
	Map<Degree, List<CurricularCourse>> groupedCourses = competenceCourse.getAssociatedCurricularCoursesGroupedByDegree();

	List<DegreeCourseStatisticsDTO> results = new ArrayList<DegreeCourseStatisticsDTO>();

	for (Degree degree : groupedCourses.keySet()) {
	    List<Enrolment> enrollments = new ArrayList<Enrolment>();
	    List<CurricularCourse> curricularCourses = groupedCourses.get(degree);

	    for (CurricularCourse curricularCourse : curricularCourses) {
		enrollments.addAll(curricularCourse.getActiveEnrollments(executionSemester));
	    }

	    DegreeCourseStatisticsDTO degreeCourseStatistics = new DegreeCourseStatisticsDTO();
	    degreeCourseStatistics.setIdInternal(degree.getIdInternal());
	    degreeCourseStatistics.setName(degree.getNameFor(executionSemester.getExecutionYear()).getContent());
	    createCourseStatistics(degreeCourseStatistics, enrollments);

	    results.add(degreeCourseStatistics);
	}

	return results;
    }

}